Evidence map›Paper›PMID 36450919›Full record

ArticleScientific reports2022

Fetal death after the introduction of COVID-19 mitigation measures in Sweden, Denmark and Norway: a registry-based study.

Maria C Magnus, Laura L Oakley, Anne V Hansen, Anne K Örtqvist, Tanja G Petersen, Laust H Mortensen, Mette Bliddal, Anne-Marie Nybo Andersen, Olof Stephansson, Siri E Håberg

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.7field-weighted citation impact, top 27% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. Article
  3. Observational
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 8 institutions in 4 countries.

Maria C MagnusCentre for Fertility and Health, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213, Oslo, Norway. Maria.Christine.Magnus@fhi.no.
Laura L OakleyCentre for Fertility and Health, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213, Oslo, Norway.
Anne V HansenDepartment of Public Health, University of Copenhagen, Copenhagen, Denmark.
Anne K ÖrtqvistClinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.
Tanja G PetersenOpen, Odense University Hospital, Odense, Denmark.
Laust H MortensenDepartment of Public Health, University of Copenhagen, Copenhagen, Denmark.
Mette BliddalOPEN, University of Southern Denmark, Odense, Denmark.
Anne-Marie Nybo AndersenDepartment of Public Health, University of Copenhagen, Copenhagen, Denmark.
Olof StephanssonClinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.
Siri E HåbergCentre for Fertility and Health, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213, Oslo, Norway.
Norwegian Institute of Public Health · NOUniversity of Copenhagen · DKKarolinska University Hospital · SELondon School of Hygiene & Tropical Medicine · GBOdense University Hospital · DKStatistics Denmark · DKUniversity of Southern Denmark · DKVisby lasarett · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It remains unclear whether the rate of fetal death has changed during the COVID-19 pandemic. We assessed the impact of COVID-19 mitigation measures on fetal death in Sweden (449,347 births), Denmark (290,857 pregnancies) and Norway (261,057 pregnancies) using robust population-based registry data. We used Cox regression to assess the impact of the implementation of pandemic mitigation measures on March 12th, 2020, on miscarriage (fetal loss before gestational week 22) and stillbirth (fetal loss after gestational week 22). A total of 11% of 551,914 pregnancies in Denmark and Norway ended in miscarriage, while the proportion of stillbirths among 937,174 births across the three countries was 0.3%. There was no difference in the risk of fetal death during the year following pandemic mitigation measures. For miscarriage, the combined hazard ratio (HR) for Norway and Denmark was 1.01 (95% CI 0.98, 1.03), and for stillbirth, the combined HR for all three countries was 0.99 (95% CI 0.89, 1.09). We observed a slightly decreased risk of miscarriage during the first 4 months, with an HR of 0.94 (95% CI 0.90, 0.99) after lockdown. In conclusion, the risk of fetal death did not change after the implementation of COVID-19 pandemic mitigation measures in the three Scandinavian countries.

Indexed as

Abortion, SpontaneousCOVID-19Communicable Disease ControlDenmarkFemaleHumansNorwayPandemicsPregnancyRegistriesStillbirthSweden

Identifiers

PMID36450919
PMCPMC9709372
OpenAlexW4310588907

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.